<template>
  <div class="app-container">
    <el-form
      :model="queryParams"
      ref="queryForm"
      size="small"
      :inline="true"
      v-show="showSearch"
      label-width="120px"
    >
      <!--      <el-form-item label="课程名称" prop="courseName">-->
      <!--        <el-input-->
      <!--          v-model="queryParams.courseName"-->
      <!--          placeholder="请输入课程名称"-->
      <!--          clearable-->
      <!--          @keyup.enter.native="handleQuery"-->
      <!--        />-->
      <!--      </el-form-item>-->
      <el-form-item label="题目类型" prop="type">
        <el-select
          v-model="queryParams.type"
          placeholder="请选择题目类型"
          clearable
        >
          <el-option
            v-for="dict in dict.type.question_type"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="题目难度等级" prop="difficultyLevel">
        <el-select
          v-model="queryParams.difficultyLevel"
          placeholder="请选择题目难度等级"
          clearable
        >
          <el-option
            v-for="dict in dict.type.difficulty_level"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button
          type="primary"
          icon="el-icon-search"
          size="mini"
          @click="handleQuery"
          >搜索</el-button
        >
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery"
          >重置</el-button
        >
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['question:question:add']"
          >新增
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['question:question:edit']"
          >修改
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['question:question:remove']"
          >删除
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="info"
          plain
          icon="el-icon-upload"
          size="mini"
          @click="openImportTable"
          v-hasPermi="['question:question:import']"
          >对该课程导入题库
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="info"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="openAddTest"
          v-hasPermi="['question:question:generateTest']"
          >生成试卷作业
        </el-button>
      </el-col>
      <!--      <el-col :span="1.5">-->
      <!--        <el-button-->
      <!--          type="warning"-->
      <!--          plain-->
      <!--          icon="el-icon-download"-->
      <!--          size="mini"-->
      <!--          @click="handleExport"-->
      <!--          v-hasPermi="['question:question:export']"-->
      <!--        >导出</el-button>-->
      <!--      </el-col>-->
      <right-toolbar
        :showSearch.sync="showSearch"
        @queryTable="getList"
      ></right-toolbar>
    </el-row>

    <el-table
      v-loading="loading"
      :data="questionList"
      @selection-change="handleSelectionChange"
    >
      <el-table-column type="selection" width="55" align="center" />
      <!--      <el-table-column label="id" align="center" prop="questionId" />-->
      <el-table-column label="课程名" align="center" prop="courseName" />
      <el-table-column label="题描述" align="center" prop="content" />
      <el-table-column label="题目类型" align="center" prop="type">
        <template slot-scope="scope">
          <dict-tag
            :options="dict.type.question_type"
            :value="scope.row.type"
          />
        </template>
      </el-table-column>
      <el-table-column
        label="题目难度等级"
        align="center"
        prop="difficultyLevel"
      >
        <template slot-scope="scope">
          <dict-tag
            :options="dict.type.difficulty_level"
            :value="scope.row.difficultyLevel"
          />
        </template>
      </el-table-column>
      <el-table-column label="分数" align="center" prop="score" />
      <!--      <el-table-column label="题目包含图片，这里可以存储图片" align="center" prop="image" width="100">-->
      <!--        <template slot-scope="scope">-->
      <!--          <image-preview :src="scope.row.image" :width="50" :height="50"/>-->
      <!--        </template>-->
      <!--      </el-table-column>-->
      <!--      <el-table-column label="题目是否展示" align="center" prop="active" />-->
      <el-table-column
        label="操作"
        align="center"
        class-name="small-padding fixed-width"
      >
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="skipQuestion(scope.row)"
            >答案
          </el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['question:question:edit']"
            >修改
          </el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['question:question:remove']"
            >删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total > 0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改题库题干对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="800px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="120px">
        <el-form-item label="题描述" prop="content">
          <el-input
            v-model="form.content"
            type="textarea"
            placeholder="请输入内容"
          />
        </el-form-item>
        <el-form-item label="题目类型" prop="type">
          <el-select v-model="form.type" placeholder="请选择题目类型">
            <el-option
              v-for="dict in dict.type.question_type"
              :key="dict.value"
              :label="dict.label"
              :value="dict.value"
            ></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="题目难度等级" prop="difficultyLevel">
          <el-select
            v-model="form.difficultyLevel"
            placeholder="请选择题目难度等级"
          >
            <el-option
              v-for="dict in dict.type.difficulty_level"
              :key="dict.value"
              :label="dict.label"
              :value="dict.value"
            ></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="题目分数" prop="score">
          <el-input-number
            v-model="form.score"
            placeholder="请输入完成此题目所能获得的分数"
          />
        </el-form-item>
        <el-form-item label="题目包含图片" prop="image">
          <image-upload v-model="form.image" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>

    <!-- 添加试卷作业对话框 -->
    <el-dialog
      :title="title2"
      :visible.sync="open2"
      width="800px"
      append-to-body
    >
      <el-form ref="form2" :model="form2" :rules="rules2" label-width="120px">
        <el-form-item label="试卷的名称" prop="nama">
          <el-input v-model="form2.nama" placeholder="请输入试卷的名称" />
        </el-form-item>
        <el-form-item label="试卷的总分值" prop="totalScored">
          <el-input-number
            :disabled="true"
            v-model="form2.totalScored"
            placeholder="请输入试卷的总分值"
          />
        </el-form-item>
        <el-form-item label="时间限制(分钟)" prop="timeLimit">
          <el-input-number
            v-model="form2.timeLimit"
            placeholder="请输入完成试卷的时间限制(分钟)"
          />
        </el-form-item>
      </el-form>
      <!-- 试卷阅览 -->
      <div ref="sortRef">
        <div class="sort-container" v-for="(item, index) in ids" :key="index">
          <span>题目：{{ item.content }}</span>
          <br />
          <span>题目类型：{{ item.type == "2" ? "选择题" : "主观题" }}</span>
        </div>
      </div>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm2">确 定</el-button>
        <el-button @click="cancel2">取 消</el-button>
      </div>
    </el-dialog>

    <!-- 题库导入对话框 -->
    <el-dialog
      :title="upload.title"
      :visible.sync="upload.open"
      width="400px"
      append-to-body
    >
      <el-upload
        ref="upload"
        :limit="1"
        accept=".xlsx, .xls"
        :headers="upload.headers"
        :action="
          upload.url +
          '?updateSupport=' +
          upload.updateSupport +
          '&courseId=' +
          this.queryParams.courseId
        "
        :disabled="upload.isUploading"
        :on-progress="handleFileUploadProgress"
        :on-success="handleFileSuccess"
        :auto-upload="false"
        drag
      >
        <i class="el-icon-upload"></i>
        <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
        <div class="el-upload__tip text-center" slot="tip">
          <!--          <div class="el-upload__tip" slot="tip">-->
          <!--            <el-checkbox v-model="upload.updateSupport" /> 是否更新已经存在的用户数据-->
          <!--          </div>-->
          <span>仅允许导入xls、xlsx格式文件。</span>
          <el-link
            type="primary"
            :underline="false"
            style="font-size: 12px; vertical-align: baseline"
            @click="importTemplate"
            >下载模板</el-link
          >
        </div>
      </el-upload>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitFileForm">确 定</el-button>
        <el-button @click="upload.open = false">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import {
  listQuestion,
  getQuestion,
  delQuestion,
  addQuestion,
  updateQuestion,
  addPapers,
} from "@/api/question/question";
import { getToken } from "@/utils/auth";
import Sortable from "sortablejs"; // 拖动组件
export default {
  name: "Question",
  dicts: ["question_type", "difficulty_level"],
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 题库题干表格数据
      questionList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        content: null,
        type: null,
        courseName: null,
        difficultyLevel: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        content: [
          { required: true, message: "题描述不能为空", trigger: "blur" },
        ],
      },
      title2: "",
      open2: false,
      form2: {},
      rules2: {
        nama: [{ required: true, message: "试卷名不能为空", trigger: "blur" }],
        totalScored: [
          { required: true, message: "总分值不能为空", trigger: "blur" },
        ],
        timeLimit: [
          { required: true, message: "时间限制不能为空", trigger: "blur" },
        ],
      },
      // 题库导入参数
      upload: {
        // 是否显示弹出层（用户导入）
        open: false,
        // 弹出层标题（用户导入）
        title: "",
        // 是否禁用上传
        isUploading: false,
        // 是否更新已经存在的数据
        updateSupport: 0,
        // 设置上传的请求头部
        headers: { Authorization: "Bearer " + getToken() },
        // 上传的地址
        url: process.env.VUE_APP_BASE_API + "/question/question/importData",
      },
    };
  },
  created() {
    this.queryParams.courseId = this.$route.query.courseId;
    this.getList();
  },
  methods: {
    openImportTable() {
      this.upload.title = "题库导入";
      this.upload.open = true;
    },
    /** 下载模板操作 */
    importTemplate() {
      this.download(
        "question/question/importTemplate",
        {},
        `question_template_${new Date().getTime()}.xlsx`
      );
    },
    // 文件上传中处理
    handleFileUploadProgress(event, file, fileList) {
      this.upload.isUploading = true;
    },
    // 文件上传成功处理
    handleFileSuccess(response, file, fileList) {
      this.upload.open = false;
      this.upload.isUploading = false;
      this.$refs.upload.clearFiles();
      this.$alert(
        "<div style='overflow: auto;overflow-x: hidden;max-height: 70vh;padding: 10px 20px 0;'>" +
          response.msg +
          "</div>",
        "导入结果",
        { dangerouslyUseHTMLString: true }
      );
      this.getList();
    },
    // 提交上传文件
    submitFileForm() {
      this.$refs.upload.submit();
    },

    openAddTest() {
      if (this.ids.length == 0) {
        this.$modal.msgWarning("请勾选题后生成试卷");
      } else {
        this.reset2();
        this.open2 = true;
        this.title2 = "生成试卷作业";
        // 计算所选题目总分
        this.form2.totalScored = this.ids.reduce(
          (total, element) => total + Number(element.score),
          0
        );

        let that = this;
        this.$nextTick(() => {
          let el = that.$refs.sortRef;
          new Sortable(el, {
            animation: 150,
            onStart() {},
            onEnd(evt) {
              // 对数组排序进行调整
              that.ids.splice(
                evt.newIndex,
                0,
                that.ids.splice(evt.oldIndex, 1)[0]
              );
              let newArray = that.ids.slice(0);
              that.ids = [];
              that.$nextTick(() => {
                that.ids = newArray;
              });
            },
          });
        });
      }
    },
    skipQuestion(row) {
      this.$router.push({
        path: "/stem/options",
        query: { questionId: row.questionId },
      });
    },
    /** 查询题库题干列表 */
    getList() {
      this.loading = true;
      listQuestion(this.queryParams).then((response) => {
        this.questionList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        questionId: null,
        content: null,
        type: null,
        difficultyLevel: null,
        score: null,
        courseId: null,
        image: null,
        active: null,
        createBy: null,
        createTime: null,
        updateBy: null,
        updateTime: null,
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection;
      this.single = selection.length !== 1;
      this.multiple = !selection.length;
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加题库题干";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const questionId = row.questionId || this.ids;
      getQuestion(questionId).then((response) => {
        this.form = response.data;
        this.open = true;
        this.title = "修改题库题干";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate((valid) => {
        if (valid) {
          if (this.form.questionId != null) {
            updateQuestion(this.form).then((response) => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            this.form.courseId = this.queryParams.courseId;
            addQuestion(this.form).then((response) => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 生成试卷作业提交按钮 */
    submitForm2() {
      this.$refs["form2"].validate((valid) => {
        if (valid) {
          this.form2.paperQuestionsList = this.ids.map((element, index) => ({
            questionId: element.questionId,
            questionOrder: index + 1,
          }));
          this.form2.courseId = this.queryParams.courseId;
          addPapers(this.form2).then((response) => {
            this.$modal.msgSuccess("新增成功");
            this.open2 = false;
          });
        }
      });
    },
    // 取消按钮
    cancel2() {
      this.open2 = false;
      this.reset2();
    },
    // 表单重置
    reset2() {
      this.form = {
        nama: null,
        totalScored: null,
        timeLimit: null,
      };
      this.resetForm("form");
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const questionIds = row.questionId || this.ids;
      this.$modal
        .confirm('是否确认删除题库题干编号为"' + questionIds + '"的数据项？')
        .then(function () {
          return delQuestion(questionIds);
        })
        .then(() => {
          this.getList();
          this.$modal.msgSuccess("删除成功");
        })
        .catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download(
        "question/question/export",
        {
          ...this.queryParams,
        },
        `question_${new Date().getTime()}.xlsx`
      );
    },
  },
};
</script>

<style lang="scss" scoped>
.sort-container {
  padding: 5px;
  border: 1px solid;
  border-radius: 10px;
  margin-top: 6px;
  background: #fff;
  cursor: pointer;
}
</style>
